8199871 has 4 divisors (see below), whose sum is σ = 8312272. Its totient is φ = 8087472.

The previous prime is 8199869. The next prime is 8199883. The reversal of 8199871 is 1789918.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8199871 - 2¹ = 8199869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8199271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56091 + ... + 56236.

It is an arithmetic number, because the mean of its divisors is an integer number (2078068).

Almost surely, 2^8199871 is an apocalyptic number.

8199871 is a deficient number, since it is larger than the sum of its proper divisors (112401).

8199871 is a wasteful number, since it uses less digits than its factorization.

8199871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112400.

The product of its digits is 36288, while the sum is 43.

The square root of 8199871 is about 2863.5416881896. The cubic root of 8199871 is about 201.6519100678.

The spelling of 8199871 in words is "eight million, one hundred ninety-nine thousand, eight hundred seventy-one".